In a statement yesterday, four days after the site was taken offline, Ticketfly said: “We’re pleased to let you know that Ticketfly Backstage is coming back online. We’ve engaged leading third party forensic and cyber security experts to investigate and help us address the issue, and have done this with your security top of mind. More specifically, box office, ticket purchasing, and scanning capabilities are now being made available again”.

It said that there were likely to be some technical issues as things came back online, and it would take some time for all the third party sites it powers to reappear. It added that all tickets purchased prior to the attack will remain valid, and should appear in buyers’ accounts after they have reset their passwords.

“We understand the importance you place on the privacy and security of your data and we deeply regret any unauthorised access to it”, said the company. “We assure you we are taking this very seriously and are committed to providing updates as appropriate”.

Ticketfly confirmed that personal details of users, including names, addresses, emails and phone numbers, were compromised during the attack. Data breach tracking website Have I Been Pwned? has confirmed that details of over 26 million people are included in the data stolen.